INDEX. 



105 



Seasonal dimorphism 

 Sea squirts ... 

 Segestria senoculata 

 Selection, sexual ... 

 Self-coloured flowers 

 Sense organs of Butterflies 

 Sertularidce 



Sexual colours 



selection 



dimorphism 



Shell, Structure of 



Shore Crab ... 



Simple variation in Butterflies . 



Siphonophora 



Small pox ... 



Snakes, patterns of 



Sollas, Prof., on Sponges 



Soles 



Sparassus smaragdidus 



Species, origin of ... 



Sjdiceronedes 



Spiling idee ... 



Spiders, structure and colour of, 



Spiracles of larvse 



Spondylus ... 



Sponges 



Spongida 



Spongocyclia 



Spots and Stripes ... 



Stephanomia amphitridis . . . 



Struggle for existence 



Sun-birds ... 



Sus vittatus... 



Sutton, Mr. Bland, on Herpes 



Swallow-tailed Butterflies 



Syncoryne pulehella 



Systems of colouration ... 



Teeth and Hair, correlation of 

 Thomisus cinereus ... 

 floricolens 



PAGE 



.. 70 



.. 35 



.. 83 

 5 



.. 28 



.. 30 



.. 63 



.. 4 

 5 



.. 70 



. 85 



.. 4 



.. 77 



.. 63 



.. 39 



.. 89 



.. 58 



.. 88 



.. 82 



.. 1 



.. 63 



45, 69 

 .. 82 

 .. 22 

 .. 86 

 .. 57 

 .. 57 

 .. 57 

 ... 39 

 ... 63 

 .. 2 

 ... 90 



46, 94 

 ... 40 

 ... 68 

 ... 62 

 ... 51 



... 94 



... 82 



... 82 



PAGE 



Thomisus luctuosus... ... ... 84 



trux ... ... •• 82 



Thrush, increase of ... . . 2 



Tiger 17, 92 



Moths 69 



Tipula ... ... ... ... 33 



Toucans 90, 92 



Transparency and colour... ... 53 



Trigonia ... ... ... ... 86 



Tubipora musica ... ... ... 54 



Tubidarida... ... ... ... 59 



Tylor, A., on Specific change ... 10 



Vanessa Antiopa ... ... ... 76 



atalanta 29,43,69 



urticce ... ... ... 77 



Variation in insects ... ... 70 



law of ... 2 



simple, in Butterflies ... 77 



Velella 52, 65 



Vertebrata, colouration of ... 88 



Viverridce ... ... ... ... 94 



Wallace, A. B., on sexual selec- 

 tion ...5, 6, 14, 15 



on colour 29 



on abnormal struc- 

 tures 94 



Warning colours ... ... ... 4 



Wasps 84 



Weir, J. Jenner, on variation in 



insects ... ... ... ... 78 



Weismann, Dr., on Caterpillars... 81 



Wing of Butterfly, typical ... 70 



patterns of ... ... ... 76 



Woodpecker ... ... ... 91 



Yellow Archangel... ... ... 96 



Zebra 92 



Zygcena ... ... ... ... 69 



